[PATCH] tty: serial: uartlite: Use constants in early_uartlite_putc
DORMANTno replies
LANDED
From: Sean Anderson <hidden>
Date: 2021-08-26 19:43:39
Subsystem:
the rest, tty layer and serial drivers, xilinx uartlite serial driver · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby, Peter Korsgaard
Landed in mainline as 3620a89b7d27 on 2021-08-27.
Use the constants defined at the beginning of this file instead of integer literals when accessing registers. This makes this code easier to read, and obviates the need for some explanatory comments. Signed-off-by: Sean Anderson <redacted> --- drivers/tty/serial/uartlite.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index f42ccc40ffa6..bcea7ef4699f 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c@@ -553,16 +553,15 @@ static void early_uartlite_putc(struct uart_port *port, int c) * This limit is pretty arbitrary, unless we are at about 10 baud * we'll never timeout on a working UART. */ - unsigned retries = 1000000; - /* read status bit - 0x8 offset */ - while (--retries && (readl(port->membase + 8) & (1 << 3))) + + while (--retries && + (readl(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL)) ; /* Only attempt the iowrite if we didn't timeout */ - /* write to TX_FIFO - 0x4 offset */ if (retries) - writel(c & 0xff, port->membase + 4); + writel(c & 0xff, port->membase + ULITE_TX); } static void early_uartlite_write(struct console *console,
--
2.25.1